Solution for reversing an integer

reverse_int.go

func reverse(x int) int {
    neg := 1
    ans := 0
    if x < 0 {
    //make sure to only work with positive numbers
        x *= -1
        neg = -1
    }
    
    //the business loop!
    for x > 0 {
        ans *= 10
        ans += x %10
        x = x/10
    }
    
    //catch overflow
    if ans > 2147483648 || ans < (2147483648 * -1) {
        return 0
    }
    
    return ans * neg
}